()可随时将被测原油和是产油量、水量、气量以及井口压力、温度数据在井口平台或中心平台的中控室打印出来
A、电磁流量计
B、超声波流量计
C、孔板流量计
D、多相流量计
参考答案:D
— How was your Spring Festival Holiday in Hainan?
— Really wonderful! I have never had _____ one before. [ ]
A. a very pleasant
B. a more pleasant
C. a most pleasant
D. so a pleasant
逆向思维主要有()、()、()、()、()和()等。